Classification and proper selection of welding heads mouth shape

Type I: welding head has a subtle tip. It is suitable for fine welding or narrow welding space, and can also correct the tin bridge produced when welding chips.

 Type b (conical): type b welding head has no directionality, and the whole front end of welding head can be welded. Type lb is a kind of type b with slender shape. Able to operate sensitively in welding environment with tall components around welding spot or narrow welding space. Application scale: Suitable for general welding, regardless of the size of solder joints, B-type welding head can also be used. 

Type d (straight nozzle shape): welding with nozzle part. Application scale: It is suitable for welding with a large amount of tin, such as welding environment with large welding area, thick terminals and large welding pads.

C-type (bevelled cylinder): welding is carried out with the bevel part at the front end of the welding head, which is suitable for welding requiring more tin. Application scale: The application scale of C-type welding head is similar to that of D-type welding head, such as large welding area, thick terminals and large welding pads. 0.5c, 1c and other welding head are very fine, which is suitable for welding fine components or correcting tin bridges and columns produced during surface welding. 2c, 3cf welding head, suitable for welding resistors, diodes and other components, sop and qfp with larger pitch can also use 4c, which is suitable for grounding of bulky terminals and circuit boards. Power supply parts and other welding occasions requiring large heat. K-type: Features: It can be welded by knife-shaped parts, vertical or pull welding, and belongs to multi-purpose welding head.

Application scale: It is suitable for welding soj, plcc, sop, qfp, power supply, grounding components, correcting tin bridges, connectors, etc. Choosing the right type of welding head: 

1. According to the size of solder joints: Choosing the right welding head according to the size of solder joints can make the operation smoother. I-nozzle is used for welding joints with fine welding and limited welding environment. The welding joints of B-type and C-type welding joints are relatively large, which can improve efficiency and save welding time. 

2. Dense degree of solder joints: When soldering on denser circuit boards, using thinner welding head can reduce the forming opportunity of tin bridge. And the solder joints are relatively loose, such as ic pins, which can be completely dragged with a K-shaped knife. 

3. According to the solder joint shape: because the overall foot position shapes of components are different, we are also required to select the corresponding and easy-to-use welding head mouth shape. For example, resistors, capacitors, soj chips and sop chips need the cooperation of different welding head to improve operation efficiency.